One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,8)(3,7,4,5)(9,10,13,12)(11,15,16,14)(17,18)(19,25)(20,24)(21,23)(22,26)(27,32)(28,31)(29,30)(1,3,6,4)(2,5,8,7)(9,11,13,16)(10,14,12,15)(17,19)(18,22)(20,28)(21,26)(23,25)(24,32)(27,30)(29,31)(1,2,6,8)(3,7,4,5)(9,10,13,12)(11,14,16,15)(18,23)(19,26)(24,29)(27,28)(3,4)(5,7)(17,20,21,30)(18,24,23,29)(19,27,26,28)(22,31,25,32)(1,4,6,3)(2,7,8,5)(9,10,13,12)(11,14,16,15)(17,19)(18,22)(20,27)(21,26)(23,25)(24,31)(28,30)(29,32)(1,5,6,7)(2,3,8,4)(9,12,13,10)(11,15,16,14)(17,18)(19,22)(20,29)(21,23)(24,30)(25,26)(27,32)(28,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.